/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:56:05,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:56:05,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:56:05,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 08:56:05,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:56:05,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:56:05,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:56:05,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:56:05,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:56:05,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:56:05,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:56:05,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:56:05,739 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:56:05,739 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:56:05,740 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:56:05,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:56:05,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 08:56:05,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:56:05,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:56:05,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:56:05,753 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 08:56:05,774 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:56:05,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:56:05,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:56:05,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:56:05,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:56:05,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:56:05,776 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:56:05,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:56:05,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:56:05,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:56:05,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:56:05,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:56:05,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:56:05,777 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:56:05,777 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:56:05,777 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:56:05,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:56:05,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:56:05,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:56:05,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:56:05,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:56:05,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:56:05,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:56:05,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:56:05,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:56:05,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 08:56:05,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 08:56:05,779 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:56:05,779 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:56:05,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:56:05,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 08:56:05,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:56:05,780 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 08:56:05,780 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:56:05,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:56:05,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:56:05,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:56:05,967 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:56:05,967 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:56:05,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound1.i [2022-01-10 08:56:06,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9be67ac57/7f35d09ccfe04c8f939b50df87f8a5b0/FLAG4afbd3b70 [2022-01-10 08:56:06,365 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:56:06,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound1.i [2022-01-10 08:56:06,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9be67ac57/7f35d09ccfe04c8f939b50df87f8a5b0/FLAG4afbd3b70 [2022-01-10 08:56:06,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9be67ac57/7f35d09ccfe04c8f939b50df87f8a5b0 [2022-01-10 08:56:06,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:56:06,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 08:56:06,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:56:06,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:56:06,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:56:06,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:56:06" (1/1) ... [2022-01-10 08:56:06,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b7fee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:56:06, skipping insertion in model container [2022-01-10 08:56:06,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:56:06" (1/1) ... [2022-01-10 08:56:06,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:56:06,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:56:06,519 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound1.i[950,963] [2022-01-10 08:56:06,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:56:06,548 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:56:06,556 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_valuebound1.i[950,963] [2022-01-10 08:56:06,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:56:06,567 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:56:06,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:56:06 WrapperNode [2022-01-10 08:56:06,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:56:06,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:56:06,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:56:06,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:56:06,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:56:06" (1/1) ... [2022-01-10 08:56:06,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:56:06" (1/1) ... [2022-01-10 08:56:06,593 INFO L137 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 69 [2022-01-10 08:56:06,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:56:06,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:56:06,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:56:06,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:56:06,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:56:06" (1/1) ... [2022-01-10 08:56:06,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:56:06" (1/1) ... [2022-01-10 08:56:06,600 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:56:06" (1/1) ... [2022-01-10 08:56:06,600 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:56:06" (1/1) ... [2022-01-10 08:56:06,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:56:06" (1/1) ... [2022-01-10 08:56:06,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:56:06" (1/1) ... [2022-01-10 08:56:06,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:56:06" (1/1) ... [2022-01-10 08:56:06,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:56:06,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:56:06,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:56:06,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:56:06,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:56:06" (1/1) ... [2022-01-10 08:56:06,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:56:06,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:56:06,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 08:56:06,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 08:56:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:56:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:56:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:56:06,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:56:06,701 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:56:06,702 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:56:06,847 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:56:06,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:56:06,851 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 08:56:06,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:56:06 BoogieIcfgContainer [2022-01-10 08:56:06,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:56:06,853 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 08:56:06,853 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 08:56:06,854 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 08:56:06,856 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:56:06" (1/1) ... [2022-01-10 08:56:06,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:56:06 BasicIcfg [2022-01-10 08:56:06,932 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 08:56:06,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:56:06,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:56:06,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:56:06,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:56:06" (1/4) ... [2022-01-10 08:56:06,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b43b9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:56:06, skipping insertion in model container [2022-01-10 08:56:06,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:56:06" (2/4) ... [2022-01-10 08:56:06,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b43b9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:56:06, skipping insertion in model container [2022-01-10 08:56:06,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:56:06" (3/4) ... [2022-01-10 08:56:06,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b43b9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:56:06, skipping insertion in model container [2022-01-10 08:56:06,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:56:06" (4/4) ... [2022-01-10 08:56:06,937 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_valuebound1.iTransformedIcfg [2022-01-10 08:56:06,942 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:56:06,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:56:06,987 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:56:06,994 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 08:56:06,994 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:56:07,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 24 states have (on average 1.625) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:07,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-10 08:56:07,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:56:07,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:56:07,008 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:56:07,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:56:07,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1746860147, now seen corresponding path program 1 times [2022-01-10 08:56:07,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:56:07,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163827588] [2022-01-10 08:56:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:07,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:56:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:56:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:56:07,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:56:07,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163827588] [2022-01-10 08:56:07,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163827588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:56:07,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:56:07,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:56:07,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677897133] [2022-01-10 08:56:07,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:56:07,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 08:56:07,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:56:07,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 08:56:07,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:56:07,194 INFO L87 Difference]: Start difference. First operand has 27 states, 24 states have (on average 1.625) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:07,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:56:07,206 INFO L93 Difference]: Finished difference Result 51 states and 74 transitions. [2022-01-10 08:56:07,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 08:56:07,209 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-10 08:56:07,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:56:07,216 INFO L225 Difference]: With dead ends: 51 [2022-01-10 08:56:07,216 INFO L226 Difference]: Without dead ends: 23 [2022-01-10 08:56:07,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 08:56:07,221 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:56:07,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:56:07,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-10 08:56:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-01-10 08:56:07,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-01-10 08:56:07,251 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2022-01-10 08:56:07,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:56:07,252 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-01-10 08:56:07,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:07,254 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-01-10 08:56:07,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-10 08:56:07,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:56:07,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:56:07,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 08:56:07,256 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:56:07,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:56:07,258 INFO L85 PathProgramCache]: Analyzing trace with hash -395375155, now seen corresponding path program 1 times [2022-01-10 08:56:07,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:56:07,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387331104] [2022-01-10 08:56:07,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:07,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:56:07,306 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:56:07,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45455735] [2022-01-10 08:56:07,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:07,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:07,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:56:07,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:56:07,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 08:56:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:56:07,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-10 08:56:07,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:56:07,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:56:07,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:56:07,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:56:07,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387331104] [2022-01-10 08:56:07,771 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:56:07,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45455735] [2022-01-10 08:56:07,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45455735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:56:07,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:56:07,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 08:56:07,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004908279] [2022-01-10 08:56:07,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:56:07,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 08:56:07,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:56:07,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 08:56:07,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:56:07,778 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:08,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:56:08,025 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-01-10 08:56:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 08:56:08,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-10 08:56:08,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:56:08,026 INFO L225 Difference]: With dead ends: 38 [2022-01-10 08:56:08,026 INFO L226 Difference]: Without dead ends: 32 [2022-01-10 08:56:08,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2022-01-10 08:56:08,027 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 92 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:56:08,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 29 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:56:08,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-01-10 08:56:08,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-01-10 08:56:08,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-01-10 08:56:08,032 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 15 [2022-01-10 08:56:08,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:56:08,032 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-01-10 08:56:08,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:08,032 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-01-10 08:56:08,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 08:56:08,032 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:56:08,033 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:56:08,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 08:56:08,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:08,233 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:56:08,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:56:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1972636568, now seen corresponding path program 1 times [2022-01-10 08:56:08,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:56:08,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444886518] [2022-01-10 08:56:08,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:08,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:56:08,248 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:56:08,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528906152] [2022-01-10 08:56:08,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:08,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:08,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:56:08,249 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:56:08,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 08:56:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:56:08,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 08:56:08,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:56:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 08:56:08,497 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:56:08,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:56:08,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444886518] [2022-01-10 08:56:08,498 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:56:08,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528906152] [2022-01-10 08:56:08,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528906152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:56:08,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:56:08,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:56:08,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749811345] [2022-01-10 08:56:08,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:56:08,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:56:08,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:56:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:56:08,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:56:08,501 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:09,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:56:09,636 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-01-10 08:56:09,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:56:09,636 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-10 08:56:09,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:56:09,637 INFO L225 Difference]: With dead ends: 43 [2022-01-10 08:56:09,638 INFO L226 Difference]: Without dead ends: 37 [2022-01-10 08:56:09,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-01-10 08:56:09,639 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 51 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:56:09,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 33 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 08:56:09,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-10 08:56:09,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2022-01-10 08:56:09,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:09,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-01-10 08:56:09,642 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2022-01-10 08:56:09,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:56:09,643 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-01-10 08:56:09,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:09,643 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-01-10 08:56:09,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 08:56:09,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:56:09,643 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:56:09,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 08:56:09,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-10 08:56:09,844 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:56:09,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:56:09,845 INFO L85 PathProgramCache]: Analyzing trace with hash -780655129, now seen corresponding path program 1 times [2022-01-10 08:56:09,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:56:09,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36708034] [2022-01-10 08:56:09,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:09,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:56:09,857 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:56:09,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [172466430] [2022-01-10 08:56:09,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:09,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:09,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:56:09,858 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:56:09,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 08:56:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:56:09,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 08:56:09,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:56:09,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:56:09,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:56:09,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:56:09,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36708034] [2022-01-10 08:56:09,940 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:56:09,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172466430] [2022-01-10 08:56:09,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172466430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:56:09,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:56:09,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:56:09,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319121753] [2022-01-10 08:56:09,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:56:09,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:56:09,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:56:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:56:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:56:09,941 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:09,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:56:09,966 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2022-01-10 08:56:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:56:09,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-10 08:56:09,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:56:09,966 INFO L225 Difference]: With dead ends: 50 [2022-01-10 08:56:09,967 INFO L226 Difference]: Without dead ends: 30 [2022-01-10 08:56:09,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:56:09,967 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:56:09,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 31 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:56:09,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-01-10 08:56:09,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-01-10 08:56:09,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:09,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-01-10 08:56:09,971 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 20 [2022-01-10 08:56:09,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:56:09,971 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-01-10 08:56:09,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:09,971 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-01-10 08:56:09,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-10 08:56:09,972 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:56:09,972 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:56:09,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 08:56:10,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:10,188 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:56:10,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:56:10,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1877333972, now seen corresponding path program 1 times [2022-01-10 08:56:10,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:56:10,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725924346] [2022-01-10 08:56:10,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:10,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:56:10,200 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:56:10,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770522401] [2022-01-10 08:56:10,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:10,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:10,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:56:10,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:56:10,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 08:56:10,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:56:10,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-10 08:56:10,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:56:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:56:10,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:56:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:56:14,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:56:14,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725924346] [2022-01-10 08:56:14,946 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:56:14,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770522401] [2022-01-10 08:56:14,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770522401] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:56:14,946 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:56:14,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-01-10 08:56:14,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753077620] [2022-01-10 08:56:14,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:56:14,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-10 08:56:14,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:56:14,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-10 08:56:14,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=298, Unknown=1, NotChecked=0, Total=420 [2022-01-10 08:56:14,948 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:15,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:56:15,390 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2022-01-10 08:56:15,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 08:56:15,391 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-01-10 08:56:15,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:56:15,391 INFO L225 Difference]: With dead ends: 55 [2022-01-10 08:56:15,391 INFO L226 Difference]: Without dead ends: 37 [2022-01-10 08:56:15,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=216, Invalid=485, Unknown=1, NotChecked=0, Total=702 [2022-01-10 08:56:15,392 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 47 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:56:15,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 96 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 57 Invalid, 0 Unknown, 46 Unchecked, 0.2s Time] [2022-01-10 08:56:15,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-10 08:56:15,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-01-10 08:56:15,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2022-01-10 08:56:15,396 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 22 [2022-01-10 08:56:15,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:56:15,396 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2022-01-10 08:56:15,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 21 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2022-01-10 08:56:15,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 08:56:15,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:56:15,397 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:56:15,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 08:56:15,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:15,612 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:56:15,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:56:15,613 INFO L85 PathProgramCache]: Analyzing trace with hash 725592007, now seen corresponding path program 1 times [2022-01-10 08:56:15,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:56:15,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594257115] [2022-01-10 08:56:15,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:15,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:56:15,625 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:56:15,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432784621] [2022-01-10 08:56:15,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:15,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:15,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:56:15,629 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:56:15,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 08:56:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:56:15,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 08:56:15,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:56:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 08:56:15,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:56:15,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:56:15,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594257115] [2022-01-10 08:56:15,736 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:56:15,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432784621] [2022-01-10 08:56:15,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432784621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:56:15,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:56:15,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:56:15,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648056973] [2022-01-10 08:56:15,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:56:15,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:56:15,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:56:15,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:56:15,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:56:15,737 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:16,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:56:16,299 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-01-10 08:56:16,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:56:16,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-10 08:56:16,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:56:16,300 INFO L225 Difference]: With dead ends: 37 [2022-01-10 08:56:16,300 INFO L226 Difference]: Without dead ends: 33 [2022-01-10 08:56:16,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:56:16,301 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:56:16,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 50 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:56:16,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-10 08:56:16,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-01-10 08:56:16,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:16,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2022-01-10 08:56:16,304 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 26 [2022-01-10 08:56:16,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:56:16,305 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2022-01-10 08:56:16,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:16,305 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-01-10 08:56:16,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 08:56:16,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:56:16,305 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:56:16,322 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-10 08:56:16,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:16,519 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:56:16,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:56:16,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1019850472, now seen corresponding path program 2 times [2022-01-10 08:56:16,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:56:16,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962607848] [2022-01-10 08:56:16,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:16,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:56:16,534 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:56:16,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1763338915] [2022-01-10 08:56:16,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 08:56:16,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:16,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:56:16,544 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:56:16,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-10 08:56:16,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 08:56:16,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 08:56:16,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-10 08:56:16,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:56:16,954 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 08:56:16,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:56:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 08:56:17,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:56:17,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962607848] [2022-01-10 08:56:17,541 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:56:17,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763338915] [2022-01-10 08:56:17,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763338915] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 08:56:17,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 08:56:17,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2022-01-10 08:56:17,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786080287] [2022-01-10 08:56:17,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:56:17,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 08:56:17,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:56:17,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 08:56:17,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2022-01-10 08:56:17,542 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:17,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:56:17,897 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2022-01-10 08:56:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 08:56:17,898 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-10 08:56:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:56:17,898 INFO L225 Difference]: With dead ends: 39 [2022-01-10 08:56:17,898 INFO L226 Difference]: Without dead ends: 28 [2022-01-10 08:56:17,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2022-01-10 08:56:17,899 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 89 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:56:17,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 23 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:56:17,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-10 08:56:17,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-01-10 08:56:17,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-01-10 08:56:17,902 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 27 [2022-01-10 08:56:17,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:56:17,902 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-01-10 08:56:17,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-01-10 08:56:17,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 08:56:17,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:56:17,903 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:56:17,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-10 08:56:18,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:18,120 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:56:18,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:56:18,120 INFO L85 PathProgramCache]: Analyzing trace with hash -787603991, now seen corresponding path program 1 times [2022-01-10 08:56:18,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:56:18,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222093237] [2022-01-10 08:56:18,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:18,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:56:18,129 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-10 08:56:18,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489355092] [2022-01-10 08:56:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:56:18,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:18,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:56:18,131 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:56:18,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-10 08:56:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:56:18,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 08:56:18,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:56:24,810 WARN L838 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| 1) (exists ((|v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15| Int)) (and (<= 1 |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15|) (= (div (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15|) 4294967296) 2) |c_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) (<= |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15| |c_ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|)))) is different from false [2022-01-10 08:56:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 08:56:24,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:56:24,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:56:24,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222093237] [2022-01-10 08:56:24,835 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-10 08:56:24,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489355092] [2022-01-10 08:56:24,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489355092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:56:24,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:56:24,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 08:56:24,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987549429] [2022-01-10 08:56:24,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:56:24,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 08:56:24,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:56:24,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 08:56:24,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=40, Unknown=1, NotChecked=12, Total=72 [2022-01-10 08:56:24,837 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:24,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:56:24,968 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-01-10 08:56:24,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 08:56:24,968 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-10 08:56:24,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:56:24,969 INFO L225 Difference]: With dead ends: 28 [2022-01-10 08:56:24,969 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 08:56:24,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=51, Invalid=84, Unknown=1, NotChecked=20, Total=156 [2022-01-10 08:56:24,970 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:56:24,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 21 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2022-01-10 08:56:24,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 08:56:24,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 08:56:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:24,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 08:56:24,970 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2022-01-10 08:56:24,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:56:24,970 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 08:56:24,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:56:24,971 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 08:56:24,971 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 08:56:24,972 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-10 08:56:24,973 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-10 08:56:24,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-10 08:56:25,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:56:25,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 08:56:43,329 WARN L228 SmtUtils]: Spent 15.14s on a formula simplification. DAG size of input: 71 DAG size of output: 48 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-01-10 08:56:43,332 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-01-10 08:56:43,332 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-01-10 08:56:43,332 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-01-10 08:56:43,332 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-01-10 08:56:43,332 INFO L858 garLoopResultBuilder]: For program point L16-2(line 16) no Hoare annotation was computed. [2022-01-10 08:56:43,332 INFO L858 garLoopResultBuilder]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2022-01-10 08:56:43,333 INFO L858 garLoopResultBuilder]: For program point L16-4(line 16) no Hoare annotation was computed. [2022-01-10 08:56:43,333 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2022-01-10 08:56:43,333 INFO L858 garLoopResultBuilder]: For program point L16-6(line 16) no Hoare annotation was computed. [2022-01-10 08:56:43,333 INFO L858 garLoopResultBuilder]: For program point L15-3(lines 15 17) no Hoare annotation was computed. [2022-01-10 08:56:43,333 INFO L854 garLoopResultBuilder]: At program point L37-2(lines 37 40) the Hoare annotation is: (let ((.cse9 (<= |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| (div (+ (- 1) |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|) 2)))) (let ((.cse0 (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|)) (.cse1 (<= |ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int| 0)) (.cse2 (<= |ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 1)) (.cse3 (<= 0 |ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int|)) (.cse4 (or (<= |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| (+ |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| 1)) .cse9)) (.cse5 (or .cse9 (<= |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int|))) (.cse6 (let ((.cse8 (div (+ (- 1) |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int|) 2))) (or (<= |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| (+ .cse8 1)) (<= |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| .cse8)))) (.cse7 (= |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|))) (or (and (= |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int|) .cse0 .cse1 .cse2 (= (mod (+ |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| (mod (* |ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296)) 4294967296) |ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|) .cse3 (<= 1 |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int|) .cse4 .cse5 .cse6 .cse7) (and .cse0 .cse1 .cse2 (exists ((|v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15| Int)) (and (<= 1 |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15|) (= (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15|) 4294967296) |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) (<= |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15| |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|))) .cse3 .cse4 .cse5 .cse6 .cse7)))) [2022-01-10 08:56:43,333 INFO L858 garLoopResultBuilder]: For program point L46-2(lines 25 53) no Hoare annotation was computed. [2022-01-10 08:56:43,333 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2022-01-10 08:56:43,333 INFO L858 garLoopResultBuilder]: For program point L41-1(lines 41 50) no Hoare annotation was computed. [2022-01-10 08:56:43,333 INFO L858 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2022-01-10 08:56:43,333 INFO L858 garLoopResultBuilder]: For program point L19-3(lines 19 22) no Hoare annotation was computed. [2022-01-10 08:56:43,333 INFO L858 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2022-01-10 08:56:43,333 INFO L854 garLoopResultBuilder]: At program point L19-2(lines 18 24) the Hoare annotation is: (let ((.cse0 (= 1 |ULTIMATE.start_ULTIMATE.start___VERIFIER_assert_~cond#1Int|)) (.cse10 (or (<= |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| (div (+ (- 1) |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|) 2)) (<= |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int|))) (.cse12 (= |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int|)) (.cse1 (<= 1 |ULTIMATE.start_ULTIMATE.start___VERIFIER_assert_~cond#1Int|)) (.cse2 (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int|)) (.cse3 (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int|)) (.cse4 (<= |ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int| 0)) (.cse5 (<= |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| 1)) (.cse6 (<= |ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int| 1)) (.cse7 (<= |ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int| 1)) (.cse8 (<= 0 |ULTIMATE.start_ULTIMATE.start_assume_abort_if_not_~cond#1Int|)) (.cse9 (<= 0 |ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|)) (.cse11 (= |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 (exists ((|v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15| Int)) (and (<= 1 |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15|) (= (mod (* 2 |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15|) 4294967296) |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) (<= |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15| |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int|))) .cse8 .cse9 .cse10 .cse11) (and .cse12 .cse0 (<= |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int| (+ (div (+ (- 1) |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int|) 2) 1)) (<= |ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~B~0#1Int|) .cse7 (= (mod (+ |ULTIMATE.start_ULTIMATE.start_main_~r~0#1Int| (mod (* |ULTIMATE.start_ULTIMATE.start_main_~q~0#1Int| |ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int|) 4294967296)) 4294967296) |ULTIMATE.start_ULTIMATE.start_main_~A~0#1Int|) .cse8 .cse10) (and .cse12 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse11))) [2022-01-10 08:56:43,333 INFO L858 garLoopResultBuilder]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2022-01-10 08:56:43,333 INFO L861 garLoopResultBuilder]: At program point L19-5(lines 18 24) the Hoare annotation is: true [2022-01-10 08:56:43,334 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2022-01-10 08:56:43,334 INFO L858 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2022-01-10 08:56:43,334 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2022-01-10 08:56:43,334 INFO L861 garLoopResultBuilder]: At program point L52(lines 25 53) the Hoare annotation is: true [2022-01-10 08:56:43,334 INFO L858 garLoopResultBuilder]: For program point L46(lines 46 49) no Hoare annotation was computed. [2022-01-10 08:56:43,334 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-01-10 08:56:43,334 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-01-10 08:56:43,336 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-01-10 08:56:43,337 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 08:56:43,341 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Cannot translate AuxVars back to Bitvector Sort |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15| at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.bvinttranslation.IntToBvBackTranslation.convert(IntToBvBackTranslation.java:88) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation.IcfgTransformationObserver.lambda$0(IcfgTransformationObserver.java:355) at de.uni_freiburg.informatik.ultimate.icfgtransformer.IcfgTransformationBacktranslator.translateExpression(IcfgTransformationBacktranslator.java:113) at de.uni_freiburg.informatik.ultimate.icfgtransformer.IcfgTransformationBacktranslator.translateExpression(IcfgTransformationBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-10 08:56:43,346 INFO L158 Benchmark]: Toolchain (without parser) took 36962.94ms. Allocated memory was 209.7MB in the beginning and 267.4MB in the end (delta: 57.7MB). Free memory was 159.6MB in the beginning and 118.2MB in the end (delta: 41.4MB). Peak memory consumption was 100.1MB. Max. memory is 8.0GB. [2022-01-10 08:56:43,347 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 209.7MB. Free memory is still 175.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 08:56:43,347 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.23ms. Allocated memory is still 209.7MB. Free memory was 159.3MB in the beginning and 184.3MB in the end (delta: -25.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 08:56:43,348 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.83ms. Allocated memory is still 209.7MB. Free memory was 184.3MB in the beginning and 182.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-10 08:56:43,348 INFO L158 Benchmark]: Boogie Preprocessor took 13.65ms. Allocated memory is still 209.7MB. Free memory was 182.7MB in the beginning and 181.7MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-10 08:56:43,348 INFO L158 Benchmark]: RCFGBuilder took 244.63ms. Allocated memory is still 209.7MB. Free memory was 181.7MB in the beginning and 171.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-01-10 08:56:43,348 INFO L158 Benchmark]: IcfgTransformer took 79.20ms. Allocated memory is still 209.7MB. Free memory was 171.2MB in the beginning and 167.5MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-10 08:56:43,349 INFO L158 Benchmark]: TraceAbstraction took 36412.78ms. Allocated memory was 209.7MB in the beginning and 267.4MB in the end (delta: 57.7MB). Free memory was 167.0MB in the beginning and 118.2MB in the end (delta: 48.8MB). Peak memory consumption was 107.0MB. Max. memory is 8.0GB. [2022-01-10 08:56:43,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 209.7MB. Free memory is still 175.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 182.23ms. Allocated memory is still 209.7MB. Free memory was 159.3MB in the beginning and 184.3MB in the end (delta: -25.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.83ms. Allocated memory is still 209.7MB. Free memory was 184.3MB in the beginning and 182.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 13.65ms. Allocated memory is still 209.7MB. Free memory was 182.7MB in the beginning and 181.7MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 244.63ms. Allocated memory is still 209.7MB. Free memory was 181.7MB in the beginning and 171.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 79.20ms. Allocated memory is still 209.7MB. Free memory was 171.2MB in the beginning and 167.5MB in the end (delta: 3.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * TraceAbstraction took 36412.78ms. Allocated memory was 209.7MB in the beginning and 267.4MB in the end (delta: 57.7MB). Free memory was 167.0MB in the beginning and 118.2MB in the end (delta: 48.8MB). Peak memory consumption was 107.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 36.4s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 18.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 306 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 306 mSDsluCounter, 312 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 64 IncrementalHoareTripleChecker+Unchecked, 188 mSDsCounter, 95 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 256 IncrementalHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 95 mSolverCounterUnsat, 124 mSDtfsCounter, 256 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 226 GetRequests, 139 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=5, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 291 HoareAnnotationTreeSize, 4 FomulaSimplifications, 23 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 493 FormulaSimplificationTreeSizeReductionInter, 18.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.0s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 207 ConstructedInterpolants, 25 QuantifiedInterpolants, 2656 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1340 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 41/51 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: Cannot translate AuxVars back to Bitvector Sort |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Cannot translate AuxVars back to Bitvector Sort |v_ULTIMATE.start_ULTIMATE.start_main_~b~0#1Int_15|: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.bvinttranslation.IntToBvBackTranslation.convert(IntToBvBackTranslation.java:88) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-10 08:56:43,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...